BottomThread MTB 1.37mm_24T 68/73mm for 24mm Axle

* Oversized cartridge bearings for MTB BSA 1.37ÔøΩÔøΩ_x24T. * Die cast alloy and CNC machined external cups. * Composite center sleeve with double o-ring seals. * BSA threading * Fits 24 mm spindle cranksets. * Fits 68 and 73mm wide brackets.